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Thread: Twisted / Buckled blade
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6th August 2006, 07:11 PM #1
Twisted / Buckled blade
I have just returned inside after an afternoon of stupidity on the band saw.
I was cutting the front and back off some drawers for band saw boxes ..... all was going well until I got to a drawer that was roundish, so it wouldn't get good purchase on the table, sure enough it caught on the blade and kicked up into the blade support mechanism.
The result was that the blade developed a kink ..... every time the blade goes around there is a little knock as the kink comes through. It wasn't too bad so I continued ..... until I did the same thing again :mad: .
The blade appears to wobble when the saw is on and when I cut with it there is a definite surge developed when the stock is pushed through.
I cant see exactly where the kink is so I cant try and force it back ..... is there anything else that can be done given that it is a newish blade ...... will it improve over time given the tension?
Cheers
Stinky.Now proudly sponsored by Binford Tools. Be sure to check out the Binford 6100 - available now at any good tool retailer.
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6th August 2006, 07:20 PM #2
Sounds suspiciously like the kink is on the weld joint (hopefully).
Not much that can be done I think - the blade will probably snap at the kink sooner or (rather than) later. Not a disaster though, if it is at the weld, it is likely to break clean, so can be rewelded.
Are you sure it is a kink, and not a lost or bent tooth?"Clear, Ease Springs"
www.Stu's Shed.com
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6th August 2006, 09:38 PM #3
My suggestions:
- Unplug bandsaw;
- get Stinkette to manually turn top wheel
- feel blade (from back obviously)
- track down kink(s)
- have a good look at them and assess
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6th August 2006, 11:48 PM #4China
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For the price of a new blade your troubles will be over
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6th August 2006, 11:54 PM #5
True, but why fork out the cost of a new blade, when it may need nothing more than being cut at the kink, and rewelded?
"Clear, Ease Springs"
www.Stu's Shed.com
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7th August 2006, 10:33 PM #6
Thanks for the replies ..... when I have calmed down I will take a closer look.
Unfortunately purchasing new blades isn't all that cheap ...... by the time you add in postage it is better value to buy 4+ blades at a time which quickly hits $100. If I can save a blade I am more than willing to try ...... I have better things to spend my money on.Now proudly sponsored by Binford Tools. Be sure to check out the Binford 6100 - available now at any good tool retailer.
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7th August 2006, 11:32 PM #7
You can hardly get a meat pie and a tank of gas and change out of $100 these days
Know what you mean mate - squeeze the pennies. Henry Bros have said to me in the past to keep broken blades together, and when I have a few to send em back and he'll stitch them together for me again- I'm sure he'll do the same for you. There is probably a place down your way that can weld bandsaw blades."Clear, Ease Springs"
www.Stu's Shed.com
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7th August 2006, 11:57 PM #8
Stinky, if you are ever in the Scoresby/Ferntree Gully area, try these fellas
Jalor Tools Pty Ltd
Factory 19/ 5 Samantha Crt Knoxfield VIC 3180
ph: (03) 9763 1377 Sharpening Services
I get a 6mm 6TPI Skiptooth 2945mm long blade for $15. They are toolmakers so they can handle anything steel/wood related. Take cashI know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
Albert Einstein
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8th August 2006, 12:39 AM #9China
- Join Date
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blades only cost $15 bucks, I just thought stuffing around with an old half used blade not worth the trouble
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8th August 2006, 02:04 AM #10
Except he did say it is a newish blade, and some of my blades are $50 each (bimetal), and some others that I can't afford are over $200 (carbide tipped). So 'tis a bit hard to generalise that all blades are $15, and therefore cheaper to replace without more info.
"Clear, Ease Springs"
www.Stu's Shed.com
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8th August 2006, 09:46 AM #11
It all depends on how long the kink is.
If the kink is longer than 1/2" it is not worth fixing as by the time the cut and reweld you looose about 1" not enough adjustment on your machine.
Stink if you want to save the blade just use it for straight cuts and you may get a bit more life out of it. Just be very aware that it will break when you least expect it.
Why are you paying $20+ for bladesJim Carroll
One Good Turn Deserves Another. CWS, Vicmarc, Robert Sorby, Woodcut, Tormek, Woodfast
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8th August 2006, 11:21 AM #12
Quality. Lonegivity of the cutting edge. Sharpness of the blade (and retaining that over time).
Same principal applies to any cutting tool - buy cheap, get cheap. You can buy a box of router bits for $20, or a single one for $70. Why would you by the $70 one? Same reason.
The smallest blades I buy are sub $20, but for resawing etc, I'll stick with my bimetal 1/2" (5/8"?) 3 TPI, or my 3/4" 1.3 TPI (depending on the material, and thickness of the stock)."Clear, Ease Springs"
www.Stu's Shed.com
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8th August 2006, 12:28 PM #13
Over the years I have rescued numerous blades with just such disfiguring. Un plug , open door , raise guides and roll the wheel by hand , look at the kink. (as was said before if it is in the weld. Bye- Bye...
But if it is as most it can be salvaged. Get a couple of sticks and saw a kerf wide slot in the end of each. slide the slot on the blade below the kink and above the kink twist the asticks to bend the blade to straighten the blade, little at a time and after several attempts you can near close to straight the blade. Check all around the blade as there are usually others. Tweek till you are pleased with the results.
This is no blade for Bandsaw boxes anymore but a utility blade for rough cuts and such.
If the kink is at the weld it is probably cracked. Toss or have it re-welded. As someone said, not worth the discomfort of buying a new . But clean up the old one the best you can and keep for Misc. cuts. As a WWing teacher , over the years we saved a few from distruction.
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8th August 2006, 10:37 PM #14
A quick check of the last invoice would say that my rough estimate of $100 was a little off ....
3mm x 2950 = $17.00 + gst
4.8mm x 2950 = $17.00 + gst
10mm x 2950 = $16.00 + gst
Delivery $8.00 + gst
Total $63.80
Add another blade to that and it is $82 ish.
As it is a new blade I will have a closer look and see if it can be saved.
If I was in a position to be able to collect new blades when ever I need them it would be well worth while getting a new one. Unfortunately due to work commitments and location I can only get new blades via mail order ...... this is why it is better value to get numerous blades at once.
$27.50 to order one blade at a time via mail order.Now proudly sponsored by Binford Tools. Be sure to check out the Binford 6100 - available now at any good tool retailer.
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8th August 2006, 11:21 PM #15
I've hammered kinks out on the back of the steel vice.
Usually works quite ok (but not always)
You need to make it straight along the sides and along the back of the blade.
File any dings smooth with a fine file.
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